增加了发送短信功能，完成了情景模式下只可以选着一种情景模式。
Merge remote-tracking branch 'origin/master'

Conflicts:
	android_code/res/layout/activity_model_edit.xml
	android_code/res/layout/context_model_item.xml
	android_code/src/com/xstd/pirvatephone/activity/AddContactActivity.java
	android_code/src/com/xstd/pirvatephone/activity/ContextModelActivity.java
	android_code/src/com/xstd/pirvatephone/activity/NewContextModelActivity.java
	android_code/src/com/xstd/pirvatephone/activity/SmsDetailActivity.java
	android_code/src/com/xstd/pirvatephone/utils/GetContactUtils.java
	android_code/src/com/xstd/privatephone/adapter/ModelAdapter.java